The user's base Speed is doubled after its held item is used, consumed, or removed (only if it had one to start with). If it leaves the field after this effect or gains another item, this bonus is reset.

If the target uses a damaging move this turn and if the user uses Me First before the target, the user copies that move and uses it against the target, hitting with 1.5x as much power. If the target moves before the user, Me First fails.

Previous Evolution

User goes first and readies itself, storing energy for that turn and the next turn, then goes first on the third turn with an attack that does 2x the damage the user received in this time to the Pokémon that last hit it.

Holy SPEED, Batman! Out of all of the bug type Pokemon I have ever used on a team, a fully EV-trained Accelgor is easily the fastest. I even use it on my gym team, since I'm a bug gym. Not very many good choices for tanks, but for speed, this guy beats all the rest. I'm glad to have this guy on my team - especially since his shiny is AWESOME!!!